APPLICATION & COMPONENTS

Domestic hot-water circulation

Keep potable hot-water material approval separate from ordinary closed-loop hydronic selection.

HVAC & District Energy

Locate the part.
Define the requirements.

Select a component group below.

For hot-water equipment and pump OEMs assessing specified housings, covers, check valves and fittings. Identify every wetted material and the exact finished-part qualification requirements.

Generated images illustrate the context and component categories. They are not Zhiren project photographs or engineering drawings.

Select a group. Identify your part.

Choose a component to view its function, material candidates and drawing requirements.

Illustrative component locations: Approved circulator design

Numbered locations identify component-family examples. Illustrations do not define dimensions, material grade or interchangeability.

Conceptual part illustration

COMPONENT GUIDE

Circulator pump housing

Water side of a circulator designed for a copper-alloy housing

Encloses the pump flow passage and provides the pipe and seal interfaces.

Manufacturing & delivery form
Complex housing casting with agreed machining.

Confirm the pump model and body material. A bronze housing does not establish a bronze impeller, and many circulators use other housing materials.

Material candidates

UNS C83600 Leaded red brass

A candidate for specified cast valve bodies, covers and connection housings.

An application candidate, not a confirmed equipment bill of materials or available Zhiren grade. Do not default to potable-water use.

UNS C90500 Tin bronze

A candidate for specified pump and valve components.

Review the actual medium, mating materials and manufacturing condition. Material data do not establish component pressure, wear life or pump performance.

UNS C89833 Bismuth tin bronze

A low-lead alternative to consider where the customer approves the material and manufacturing route.

Low-lead chemistry alone does not establish low leaching, potable-water eligibility or complete-product compliance. Qualification belongs to the actual component and service.

Confirm the drawing, actual duty, material standard and manufacturing condition. Material substitutions require customer approval, and supply scope is agreed after component review.

Component RFQ requirements

Pump identity: Provide model, approved housing drawing, flow-passage geometry and interfaces to the rotating assembly.
Service category: Distinguish closed-loop water from domestic hot water; supply actual temperature, pressure and water chemistry.
Alloy approval: Specify material standard and condition; for potable service define the required component qualification and responsibility.
Seals and ports: Identify gasket seats, registers, connections, machining datums and critical wall sections.
Delivery acceptance: State machining scope, leak-test method, limits, batch traceability and any required cleanliness records.

Start with your drawing, specified alloy and quantity. Include the required delivery condition and acceptance records so the manufacturing and inspection scope can be reviewed.

Prepare a component enquiry Open component specification guide

Conceptual part illustration

COMPONENT GUIDE

Pump impeller

Inside a circulation pump whose drawing specifies a copper-alloy impeller

Forms the rotating hydraulic passage in the specified pump design.

Manufacturing & delivery form
Cast impeller with agreed machining and balance scope.

A bronze pump body is not proof of a bronze impeller. Geometry, balancing and pump performance remain tied to the approved design.

Material candidates

UNS C90500 Tin bronze

A candidate for specified pump and valve components.

Review the actual medium, mating materials and manufacturing condition. Material data do not establish component pressure, wear life or pump performance.

UNS C89833 Bismuth tin bronze

A low-lead alternative to consider where the customer approves the material and manufacturing route.

Low-lead chemistry alone does not establish low leaching, potable-water eligibility or complete-product compliance. Qualification belongs to the actual component and service.

Confirm the drawing, actual duty, material standard and manufacturing condition. Material substitutions require customer approval, and supply scope is agreed after component review.

Component RFQ requirements

Hydraulic geometry: Provide vane profile, shrouds, inlet/outlet geometry, rotation direction and approved drawing revision.
Hub and shaft: Specify bore, keyway, retaining details, datums, fit and machining allowance.
Water and material: Identify service category, water/glycol composition, temperature and customer-approved alloy.
Balance and surface: Define balance criteria and responsible party, finished surfaces and permissible casting defects.
Approval records: Define dimensional and material records and any sample or assembled-pump verification required by the OEM.

Start with your drawing, specified alloy and quantity. Include the required delivery condition and acceptance records so the manufacturing and inspection scope can be reviewed.

Prepare a component enquiry Open component specification guide

Illustrative component locations: Water-side valves and covers

Numbered locations identify component-family examples. Illustrations do not define dimensions, material grade or interchangeability.

Conceptual part illustration

COMPONENT GUIDE

Pressure-reducing valve body

Pressure-regulating valve approved for the particular water service

Contains the pressure boundary, seat region and flow passages of the specified reducing-valve design.

Manufacturing & delivery form
Cast valve body with drawing-defined machining.

Confirm the actual reducing-valve model and its approved water service. A gunmetal body designation does not extend the design to other water, steam or refrigerant duties.

Material candidates

EN CC491K Leaded tin-zinc bronze / gunmetal

A candidate for specified water-side valve bodies and housings.

Confirm separately from UNS grades. Lead restrictions, medium, material standard and casting route require approval.

UNS C83600 Leaded red brass

A candidate for specified cast valve bodies, covers and connection housings.

An application candidate, not a confirmed equipment bill of materials or available Zhiren grade. Do not default to potable-water use.

UNS C89833 Bismuth tin bronze

A low-lead alternative to consider where the customer approves the material and manufacturing route.

Low-lead chemistry alone does not establish low leaching, potable-water eligibility or complete-product compliance. Qualification belongs to the actual component and service.

Confirm the drawing, actual duty, material standard and manufacturing condition. Material substitutions require customer approval, and supply scope is agreed after component review.

Component RFQ requirements

Approved valve model: Identify the water-service design, flow direction, body drawing and regulator/bonnet interface.
Inlet and outlet duty: Provide inlet and outlet pressure requirements, operating temperature and transient conditions for OEM review.
Medium: Supply water quality, glycol or treatment chemistry and any potable-water requirements.
Seat and connections: Define seat datums, thread or flange standards, sealing faces and machining allowance.
Acceptance responsibility: Allocate body leakage/defect checks and complete-valve regulating validation; state material and batch documents.

Start with your drawing, specified alloy and quantity. Include the required delivery condition and acceptance records so the manufacturing and inspection scope can be reviewed.

Prepare a component enquiry Open component specification guide

Conceptual part illustration

COMPONENT GUIDE

Valve bonnet / cover

Valve closure and stem-exit region

Closes the specified valve body and locates the stem, packing or cover seal.

Manufacturing & delivery form
Cast cover with agreed machining where a casting is specified; some designs use forged parts.

Do not infer cast-bronze construction from a bronze valve body. The bonnet may use a different alloy and manufacturing form.

Material candidates

EN CC491K Leaded tin-zinc bronze / gunmetal

A candidate for specified water-side valve bodies and housings.

Confirm separately from UNS grades. Lead restrictions, medium, material standard and casting route require approval.

UNS C83600 Leaded red brass

A candidate for specified cast valve bodies, covers and connection housings.

An application candidate, not a confirmed equipment bill of materials or available Zhiren grade. Do not default to potable-water use.

UNS C89833 Bismuth tin bronze

A low-lead alternative to consider where the customer approves the material and manufacturing route.

Low-lead chemistry alone does not establish low leaching, potable-water eligibility or complete-product compliance. Qualification belongs to the actual component and service.

Confirm the drawing, actual duty, material standard and manufacturing condition. Material substitutions require customer approval, and supply scope is agreed after component review.

Component RFQ requirements

Bonnet geometry: Provide cover profile, mounting thread or bolt pattern, body register and drawing datums.
Stem and packing: Define bore, packing arrangement, stem clearance and required coaxiality.
Sealing interface: Specify gasket profile, contact-face finish, flatness and machining allowance.
Material and duty: Confirm actual wetted surfaces, service temperature/pressure and any potable-water material approval.
Supply scope: State casting or approved alternative route, machining condition, inspection records and batch identification.

Start with your drawing, specified alloy and quantity. Include the required delivery condition and acceptance records so the manufacturing and inspection scope can be reviewed.

Prepare a component enquiry Open component specification guide

Conceptual part illustration

COMPONENT GUIDE

Check valve body

Pump outlet or water-side reverse-flow prevention point

Contains the check-valve passage and locates the drawing-specified closure mechanism.

Manufacturing & delivery form
Pressure-boundary casting with agreed machining.

Disc and seal materials can differ from the body. Cracking pressure and assembled-valve leakage are not body-only properties.

Material candidates

UNS C83600 Leaded red brass

A candidate for specified cast valve bodies, covers and connection housings.

An application candidate, not a confirmed equipment bill of materials or available Zhiren grade. Do not default to potable-water use.

EN CC491K Leaded tin-zinc bronze / gunmetal

A candidate for specified water-side valve bodies and housings.

Confirm separately from UNS grades. Lead restrictions, medium, material standard and casting route require approval.

UNS C89833 Bismuth tin bronze

A low-lead alternative to consider where the customer approves the material and manufacturing route.

Low-lead chemistry alone does not establish low leaching, potable-water eligibility or complete-product compliance. Qualification belongs to the actual component and service.

Confirm the drawing, actual duty, material standard and manufacturing condition. Material substitutions require customer approval, and supply scope is agreed after component review.

Component RFQ requirements

Valve configuration: Provide swing, lift or other design, orientation, body drawing and flow direction.
Closure interfaces: Define hinge/pin bores or guide geometry, seat datum, cover joint and travel clearances.
Pipe connections: Specify connection standard, face-to-face dimension and gasket or thread details.
Water duty: Identify service category, water chemistry, pressure, temperature and required material approval.
Inspection and assembly: Agree casting defect and body leakage criteria; allocate complete-valve functional testing and traceability.

Start with your drawing, specified alloy and quantity. Include the required delivery condition and acceptance records so the manufacturing and inspection scope can be reviewed.

Prepare a component enquiry Open component specification guide

Illustrative component locations: Strainer housing

Numbered locations identify component-family examples. Illustrations do not define dimensions, material grade or interchangeability.

Conceptual part illustration

COMPONENT GUIDE

Y-strainer body

Filtration point upstream of designated water-side equipment

Houses the specified strainer element and provides the serviceable cover and pipe interfaces.

Manufacturing & delivery form
Cast body with agreed port and cover-face machining.

The screen is a separate component, often stainless steel. Specify the exact body grade and keep complete-filter performance separate from the housing acceptance.

Material candidates

EN CC491K Leaded tin-zinc bronze / gunmetal

A candidate for specified water-side valve bodies and housings.

Confirm separately from UNS grades. Lead restrictions, medium, material standard and casting route require approval.

UNS C83600 Leaded red brass

A candidate for specified cast valve bodies, covers and connection housings.

An application candidate, not a confirmed equipment bill of materials or available Zhiren grade. Do not default to potable-water use.

UNS C89833 Bismuth tin bronze

A low-lead alternative to consider where the customer approves the material and manufacturing route.

Low-lead chemistry alone does not establish low leaching, potable-water eligibility or complete-product compliance. Qualification belongs to the actual component and service.

Confirm the drawing, actual duty, material standard and manufacturing condition. Material substitutions require customer approval, and supply scope is agreed after component review.

Component RFQ requirements

Housing arrangement: Provide flow direction, branch angle, element envelope, wall sections and drawing revision.
Screen and cover seats: Define the element location, cover attachment, gasket face and removal clearance.
Connections: Specify end connection standards, dimensions and sealing details.
Service conditions: Identify closed or potable water, glycol and treatment chemicals, pressure and temperature.
Acceptance: Agree pressure-boundary inspection, leak-test method, cleanliness, material records and machining condition.

Start with your drawing, specified alloy and quantity. Include the required delivery condition and acceptance records so the manufacturing and inspection scope can be reviewed.

Prepare a component enquiry Open component specification guide

Illustrative component locations: Water connections

Numbered locations identify component-family examples. Illustrations do not define dimensions, material grade or interchangeability.

Conceptual part illustration

COMPONENT GUIDE

Hydronic connection body

Drawing-defined branch or connection in a water-side skid or valve assembly

Connects designated passages and equipment interfaces in the specified water circuit.

Manufacturing & delivery form
Complex connection casting with interface machining; forged or machined-stock routes separately defined.

A refrigerant fitting, bent copper tube or brazed pipe assembly is not automatically a copper-alloy casting.

Material candidates

UNS C83600 Leaded red brass

A candidate for specified cast valve bodies, covers and connection housings.

An application candidate, not a confirmed equipment bill of materials or available Zhiren grade. Do not default to potable-water use.

UNS C89833 Bismuth tin bronze

A low-lead alternative to consider where the customer approves the material and manufacturing route.

Low-lead chemistry alone does not establish low leaching, potable-water eligibility or complete-product compliance. Qualification belongs to the actual component and service.

UNS C87600 Cast copper-silicon alloy

A drawing-led candidate for selected connection and valve components.

Not interchangeable with wrought brass grades. The customer must approve the exact alloy, manufacturing form and service.

Confirm the drawing, actual duty, material standard and manufacturing condition. Material substitutions require customer approval, and supply scope is agreed after component review.

Component RFQ requirements

Passage layout: Provide all branches, flow directions, wall sections, internal access and drawing revision.
Connection system: Identify each thread, flange, union or other interface and the corresponding sealing arrangement.
Water circuit: State closed or potable water, glycol type/concentration, treatment, temperature and pressure.
Material interfaces: List connected and wetted materials and the customer-approved alloy specification.
Delivery acceptance: Define casting/alternative route, machining condition, leak testing, cleanliness and required records.

Start with your drawing, specified alloy and quantity. Include the required delivery condition and acceptance records so the manufacturing and inspection scope can be reviewed.

Prepare a component enquiry Open component specification guide

All component guides in this application 7 component entries

Open a guide directly, including parts from the other equipment groups.

Circulator pump housingComponent guide

Pump impellerComponent guide

Y-strainer bodyComponent guide

Pressure-reducing valve bodyComponent guide

Valve bonnet / coverComponent guide

Check valve bodyComponent guide

Hydronic connection bodyComponent guide

FURTHER GUIDANCE

Prepare the technical RFQ.

Alloy reference

Review tin-bronze grades.

Compare reference grades and composition in the alloy catalogue. Use the approved component specification to determine the required alloy and service suitability.

Explore the alloy reference

Domestic hot-water circulation

Locate the part.Define the requirements.

Select a group. Identify your part.

Prepare the technical RFQ.

Review tin-bronze grades.

Locate the part.
Define the requirements.